Pinning construction for universal joint



Jan. 14, 1958 G. B. STILLWAGON, JR 2,819,596

PINNING CONSTRUCTION FOR UNIVERSAL JOINT Filed May 5, 1955 INVENTOR.660265 51 sr/u W4GOA/ JEZ United States Patent PINNING CONSTRUCTION FORUNIVERSAL JOINT George B. Stillwagon, Jr., Dayton, Ohio, assignor ofonehalf to Kenneth G. Fraser, Dayton, Ohio Application May 5, 1955,Serial No. 506,126

4 Claims. (CI. 6417) This invention relates to pinning construction foruniversal joints, and the method of making same, and more particularlyto an improved central block and arm or pinning attachment.

The invention has for its object the provision of a simple constructionwhich is easily and inexpensively assembled, and one which will beefiicient, durable and permanent.

Other objects and advantages reside in the construction of parts, thecombination thereof and the mode of operation, as will become moreapparent from the following description.

In the drawings,

Figure 1 is a top plan view of the pinning construction.

Figure 2 is an end view taken in the direction of the arrow 2 of Figure1, wherein the pinning construction is only partially completed andwherein a portion is broken away to illustrate the assembly of thedevice.

Figure 3 is a vertical cross section taken substantially on the line 3-3of Figure 1.

Figure 4 is a perspective view of the device.

Figure 5 is a perspective view of a modification; and

Figure 6 is a cross sectional view of the modification.

Referring more in detail to the drawing, a block 10 is provided withthree mutually perpendicular or normally positioned intersectingborings. In assembling the device, a pin 12 is inserted into and throughone of the borings. Its ends protrude through the block on oppositesides thereof to form oppositely extending arms 14 and 16.

The mid-section 18 of the pin 12 is shown square or rectangular in crosssection in Figures 2 and 3; but it is to be understood that the deviceis not limited to this configuration. It may be of any configurationwhich will allow its partial entrance between the lip sections 20 and 22of an arm 24, positioned in another one of the borings, and sufficientlyreduced in size so that shoulders 25 are formed which prevent thewithdrawal of the pin 12 after the arm 24 is swaged in place.

An arm 26 similar to the arm 24 is placed in alignment therewith at theopposite end of the boring occupied by the arm 24. The arm 26 is alsoprovided at its inwardly extending end with a pair of lips 28 and 30,which also embrace the mid-section 18 of the pin 12. These arms 24 and26 are swaged in place and the lips 20, 22, 28 and 30, when forcedagainst the mid-section 18, arch outwardly to become shouldersprojecting into the third boring. These shoulders prevent disengagementof the arms 24 and 26 from the block 10.

In the event of a lateral movement of the pin 12, the shoulders 25engage the lips or shoulders 20, 22, 28 and 30, to prevent thewithdrawal of the pin 12 from the block. Ordinarily, however, there isno play between the shoulders 25 and the lips 20, 22, 28 and 30.

Figure 2 shows the arm 24 and the lips 20 and 22 be- See fore theswaging operation. It also shows the lips 28 and 30 of the arm 26 afterthe swaging operation has been completed. In Figures 3 and 4 the swagingoperation has been completed.

In the modification shown in Figures 5 and 6, a modified block 40 isused, wherein the third boring is omitted. The block 40 is provided withnormally positioned first and second borings, the second of which isenlarged at the center of the block. The enlarged portion forms acylindrical cavity 42 which allows for the outward expansion of the lips20, 22, 28 and 30,, of the arms 24 and 26, positioned in the secondboring. The cavity also provides shoulders 44 and 46 which act as stopsto prevent the arched lip portions 20, 22, 28 and 30 from becomingdisengaged from the block 40. In all other respects the pin and armconstruction is identical with the form of the invention described aboverelative to Figures 1 to 4 inelusive.

Although the preferred embodiment of the device has been described, itwill be understood that within the purview of this invention, variouschanges may be made in the form, details, proportion and arrangement ofparts, the combination thereof and mode of operation, which generallystated consist in a device capable of carrying out the objects setforth, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

1. A pinning construction for a universal joint comprising a blockprovided with first and second normally disposed borings intersecting inthe center thereof, a pin extending through said first boring andterminating at its opposite ends in cylindrical arms protruding fromsaid block, said pin having a reduced mid-section of rectangular crosssection extending diametrically within said second boring, a pair ofarms, there being one arm seated in each end of said second boring andprotruding from said block, swaged lips on the inner end of each saidarm engaging and interlocking with the rectangular mid-section of saidpin, said block having a cavity therein into which the swaged lipsproject whereby said pin and said arms are non-rotatably retained insaid block.

2. A pinning construction according to claim 1, wherein the cavity insaid block into which the swaged lips project is provided by a thirdboring extending normal to and intersecting the first and second boringsof said block at the center thereof.

3. A pinning construction according to claim 1, wherein the cavity insaid block into which. the swaged lips project is provided by increasingthe diameter of said second boring in the center of said block.

4. A pinning construction for a universal joint comprising a blockprovided with first and second normally disposed borings intersecting inthe center thereof, a pin extending through said first boring andterminating at its opposite ends in cylindrical arms protruding fromsaid block, said pin having a reduced mid-section of non-circular crosssection extending diametrically within said second boring, a pair ofarms, there being one arm seated in each end of said second boring andprotruding from said block, swaged lips on the inner end of each saidarm engaging and interlocking with the non-circular mid-section of saidpin, said block having a cavity therein into which the swaged lipsproject whereby said pin and said arms are non-rotatably retained insaid block.

References Cited in the file of this patent UNITED STATES PATENTS1,371,750 Fox Mar. 15, 1921

